The page could not be loaded. The CMS.gov Web site currently does not fully support browsers with
“JavaScript” disabled. Please enable “JavaScript” and revisit this page or proceed with browsing CMS.gov with
“JavaScript” disabled.
Instructions for enabling “JavaScript” can be found here.
Please note that if you choose
to continue without enabling “JavaScript” certain functionalities on this website may not be available.

This study was designed to quantitatively assess the impact of deficiencies in completeness and precision of hospital case
cost data on cost weight compression. For the nursing per diem model versus the nursing workload model the average compression
was 19.6 percent (for the 25.9 percent of cases that changed cost weight by at least 5 percent).